Combined tire-valve and pressure-governor.



COMBINED TIRE VALVE AND PRESSURE GOVERNOR. APPLlcATlN HLED 1513.9. 1916.

1,267,231. Patented May 21,1918.

Syvum/Eto@ FFQE,

LOUS F. KERNDL, 0F LANSING, MICHIGAN.

COMBINED TIRE-VALVE AND PRESSUE-GGVERNOR.

meneer.

Specification of Letters Patent.

Patented May 21, i191 8 Application filed February 9, 191,6. Serial No. 77,321.

To aZZ fwhom it may concern Bc it lrnown that l, LOUIS l?. KERNDL, al

Hr designed for use in connection with pneuinutill tires, the object. in view being to provide in one article, applicable. to pneumatic tires` a tire intiating valve, a pressure indicator. a high pressure governor, and a low pressure indicator', the valve embodying a. simple and novel construction and relative arrangement ot' parts whereby the valve as a whole may be set to automatically relieve excess pressure over a predetermined number ot' pounds per square inch. alsoV to indicate when a predetermined low pressure is reached. and also to provide for the inflation ot' the tire tothe proper pressure, the valve also en'ibodyingr means whereby, in case of dearrangement of the mechanism, the valve may still be used to perform the usual and ordinaryy function' of an intlating valve.

With the above and other objects in View, the. invention consists in the novel construction` combination and arrangement of parts, as herein described, illustrated and claimed.

in the accompanying drawings Figure 1 is a side elevation of a valve 'embodying the present invention.

Fig. 2 is a vertical diametrical section through the same.

The easing of the valve which is designated generally at A comprises a relatively large inner end portion 1 of tubular formation forming a cylinder in which is mounted a piston valve 2, the remainder of the valve casing being reduced in diameter at 3 for a purpose which will presently appear, the reduction in the size of the casing forming an annular shoulder 4 which will 'limit the outward movement of the piston valve 2.

At its outer extremity the reduced portion.

justable bushing 94 threaded and adjustable in the outer end'of the smaller portion 3 of the casing A. A tensioning or governing sliring 10 is interposed between the piston 2 and bushing 9 and therefore exerts a pressure which tends to force the piston valve 2 inwardly causing the latter When the tire is under pressure to cover and close a lateral vent port 11 in the side of the cylinder 1. rihe piston 2 has a passage 8 intersecting an annular groove 8 to register with the port. 11. i i

The piston valve 2 is provided with an air outlet passage 12 adapted to move into and out of line with an audible signal such as a whistle designated generally at B and comprising a tubular body 13 having the usual vent opening 14 and having threaded thereon a sleeve-like closure 15 by means of whichr when necessary, the opening 14 may be closed to prevent further escape of air from the tire.

The stem G extends beyond the head 5 and 1s graduated as indicated at; 16 so as to indicate the number of pounds pressure within the tire and against the piston valve 2, the graduations being exposed beyond the head 5 which therefore acts as a marker or indicator in vconjunction with the graduations. An inclosing cap 17 mainly of transparent material such as glass, is removably itted to the outer extremity of the valve casing, said cap preferably embodying a metallic rim 5 at the inner edge thereof which is internally threaded to engage the threaded end p0rtion 3 of the valve casing A. The transparent cap 17 enables the graduations on the stem 6 to be read without removing said cap.

The outer, end of the stem 6 is'V externally threaded to enable a compressed air connection to be detachably associated therewith and within the bore 7 of the stem 6 there is mounted the usual inating valve 19.

ln operation, to inflate a tire with which the valve of this invention is associated, the cap 17 is removed and the compressed air connection is attached to the extremity of the stein 6. The incoming air displaces the valve 19 and as the pressure increases in the tire, the piston valve 2 moves outwardly under such pressure. ln the event of an excessive amount of compressed air being forced into the tire, the piston valve 2 moves outwardly until it uncovers the port or the tire may not be further increased. As

the piston valve 2 moves outwardly, the.

graduations 16 on the stem are exposed for visual inspection so that the attendant may cut olf the supply I" compressed air when the proper graduation is exposed. The compressed air connection'is then detached from the stem 6 and the cap 17 is then placed upon4 the end of the valve casing. Should the pressure in the 'tire fall below a predetermined number of pounds per square inch, the piston valve 2 in moving inwardly will bring the discharge end of the passage 12 into registry with the receiving end of the Whistle B thereby audibly notifying the driver of the machlne that one of the tires needs iniation. The operator may temporarily prevent further escape of air through the passa e and the opening 14 of the Whistle by closmg the opening 14 with the aid of the sleeve l5 until a. vpoint is reached where a supply of compressed air may be obtained. The spring maybe adjustcd by means of the collar 9 to cause the device to operate under any given maximum lpressure and should said spring break, the opening 14 of the Whistle may be closed by the sleeve 15 and a plug 20 may be inserted in the port or vent 11 to prevent escape of air at that point, In this Way, even after the breakage of the spring 10, the valve may be used in the' same way as the ordinary iniating valve.

Having thus described my invention,y I claima- In a valve of the class described, a cylinder, a pistonV head Working therein and having a tubularl piston rod the bore of which extends through the piston and pismovable into and out of line with said hig f' and 10W pressure vents in the cylinder.

In testimony whereof Iaflix my 'signature in presence of' two Witnesses.

LOUIS F. KERNDL. Witnesses W. H. Com,4 Z. C. GooDELL. 

